12078223786 has 4 divisors (see below), whose sum is σ = 18117335682. Its totient is φ = 6039111892.

The previous prime is 12078223777. The next prime is 12078223793. The reversal of 12078223786 is 68732287021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11137636225 + 940587561 = 105535^2 + 30669^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3019555945 + ... + 3019555948.

Almost surely, 2^12078223786 is an apocalyptic number.

12078223786 is a deficient number, since it is larger than the sum of its proper divisors (6039111896).

12078223786 is an equidigital number, since it uses as much as digits as its factorization.

12078223786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6039111895.

The product of its (nonzero) digits is 451584, while the sum is 46.

The spelling of 12078223786 in words is "twelve billion, seventy-eight million, two hundred twenty-three thousand, seven hundred eighty-six".